Brake-shoe



Patented July 19, 1921..

J. S. THOMPSON.

BRAKE SHOE.

APPLICATION FILED DECAY} 1919.

lit S A, T

JAMES S. THOMPSON,

SHOE & FOUNDRY DELAWARE.

Specification of Letters Yatent.

OF PELHAM, Nliflfi/- YORK, ASSIGNOR TO THE AMERICAN BRAKE COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OE BRA.KESHOE.

Patented July TO, 11921.

Application filed December 17, 1919'. Serial No. 345,535.

To all whom it may concern:

Be it known that I, JAMES S. TrroMrsoN, a citizen of the United States, residing at Pelham, in the county of -Westchester and State of New York, have invented certain new and useful Improvements in Brake Shoes, of which the following is a specification.

This invention relates to novel improve ments in brake shoes of that general type which comprises a plurality of strips of reticulated metal embedded in the body of the shoein an inclined position on edge to the wearing face of the shoe, as more broadly set. forth in my concurrent application Serial The object of this invention is to provide for the assembly of inserts with the reticulated metal strips in a simple and effective manner to insure proper spacing and positioning of the strips with respect to each other preliminary to the operation of casting the body thereon.

In my concurrent application Serial No.

345,533 I have provided for the insertion of the inserts in registered openings of the strips, relying upon the fit of the inserts in the openings to hold the parts in assembled relation and the strips in spaced position. However, the inserts and the strips are more or less roughly made and are not given very much finish, and it would involve too much labor cost to actually fit the inserts to the strips. Unless there is such an engagement 35 between the inserts and the strips as will hold them in assembled relation, the inserts may drop out of the strips or the strips may become disarranged on the inserts in preparing for the operation of casting on the body.

The purpose of the present invention is to provide a somewhat refined insert construction which will insure the permanent engagement of the insert with thestrips and also insure the proper positioning of the strips on the inserts so that in the completed,

shoethe strips and the inserts will always be located in their predetermined position with respect to each other and in the body of the shoe. y In the accompanying drawings, I have illustrated a selected embodiment of the invention, and referring thereto Figure it shows a section; of an expanded;

metal strip with the inserts proper disposed therein. 7

F 2 is a perspective view of the insert.

Fig. 3 is a detail view showing how the insert is arranged in the strips.

Fig. 4 is a cross-sectional view on the line 4-4 of Fig. 1.

Fig. 5 is a side elevation of the insert shown in Fig. 2.

Fig. 6 is a side elevation, partly in sec- 7 tion, showing a simple form of car shoe embodying the invention.

Referring to the drawings, 7 is a section of expanded metal which may be satisfactorily employed as the material for the reinforcing strips. I may use any other form of reticulated metal suitable for the purpose and with which my present invention may be embodied. A plurality of these reinforcing strips are arranged in an inclined position on edge to the wearing face of the shoe as indicated by Fig. 4:.

The strips 7 are arranged in parallel relation with their openings in registration,

and inserts 8 are inserted in the registered openings of the strips, as many inserts being used as may be desired. The insert preferably consists of a single casting substantially wedge-shape in cross-section, and it may be made of manganese steel or of any other suitable metal or material. The upper corners of the insert are provided with oppositely disposed recesses 10 spaced apart at suitable intervals, and the bottom of the insert is provided withcurved recesses 11 which extend through the corners and across the bottom of the insert. The recesses 11 are out of alinement or oif-set from recesses 10 especially to provide for and accommodate the peculiar construction of expanded metal and the inclined position of the expanded metal strips with relation to the inserts, as shown in Fig. 4. It may be noted that one important reason for inclining the inserts] tered openings of the strips, and then turned to upright position asshown in Fig. 1. The

construction is such that when (the insert insert, each corner will have interlocking enexpanded metal gagement with the four strands of the or:- panded metal which form the opening in which the insert is located. This provides a sufficiently strong and rigid interlocking engagement of the strands and the .inserts to insure the permanent assembly of these parts-and also to insure the proper spacing of the strips in an inclined position on edge to the wearing face of the shoe. Thus the strips and the inserts will be held together, when assembled, in a unitary structure which will be maintained during ordinary handling preliminary to and through the operation of casting the body l2 thereon. This is of material importance in the 'inanufactu're of brake shoes of this general type because it materially assistsin maintaining uniformity of production. it also materially reduces the cost of manufacture because there is very little, if any likelihood of the strips or inserts becoming detached when once assembled, and they will maintain their proper relationship in the handling operations preliminary to casting the body thereon.

Iftheshoe is provided with a reinforcing back 13, in a manner well known in the art,

the strips? 'may be anchored therewith. by

spot-welding, or in the manner set forth in my concurrent application Serial No. 3%,536. It will be understood, of course, that any desired number of inserts maybe used, and

they may be made of any suitable metal or material, and embodied, in brake shoes of any kind to'which the invention isadapted; The recesses as shown in the drawings are disposed in position to accommodate the expanded metal strips, and it may be desirable to change the shape and size and location of these recesses, more or less, to accommodate strips of wire mesh or' "other reticulated metal. In" this connection it will be appar-' {they can beinserte'd endwise through the iregis'teredopenings of a plurality'of reticulated metal strips arranged on edgein paralent' that the inserts must be so shaped that 'lel'relation, after which the inserts must be so constructed that they can be turned to eng'age1corne1-s of the inserts with tiie walls of the strips'w'hich form the openings in which the inserts are located. From the dis closure of the insert construction for use withexpa'n'ded metal strips herein, whatever changes are necessary to adapt the inserts for use with other kinds of reticulated metal strips will be easily determined. The inserts shown in the drawings are wedge-shape in cross section, generally speaking, but it will be noted that they are slightly deformed to facilitate their insertion endwise in registered openings of the strips. Such deformation or formation of the inserts may be required to" suit peculiar shapes of expanded 7 5 metal openings or different 'mesh, or to suit the openings of other reticulated metal, and will be made whenever it seems desirable so to do. I believe that the drawings and the foregoing description are sufficient to make the invention fully understood to those skilled in the art without further elaboration, except to say that I reserve the right to make all changes in the form, proportion and construction of parts as fairly fall within the scope of'the appended claims.

Iclaim:

1. An assembly of partsfor embed-ment in the body of a brake shoe comprising a plurality of strips of reticulated metal arranged side by side on edge with openings in registration, and inserts. insertible endwise in registered openings of the strips and adapted to be turned into" interlocking engagement with the walls thereof. 9

2. An assembly of parts for embed'ment in the body'of a brake shoe comprising a plurality of strips of expandednietal arranged side by side on edge with openings in registratiomand inserts insertible end- 1 wise in registered openings of the strips and adapted to be turned into, interlocking engagement'with the walls thereof."

3. An assembly of parts for embedment in the body 'ofabrake shoe comprising a 1 plurality of strips of reticulated metal ar-" ranged side by side on edge with openings in registration, and inserts insertible endwise in registered openings of the strips and having recesses therein and adapted to be turned 1 in said openings to engages'aid recesses with" the walls of the openings. 7

4. An assembly of parts for embedment in the'bo'dy of a brake shoe coinprising a plurality of strips of reticulated Inetal-arranged side by side on edge with openings in registration; and inserts insertible endwise' in registered openings of the strips and having recesses at its corners and adapted to be'turned in saidopeningsto.engage the recesses with the walls of said openings.

5.'An assembly of arts" for embedinent in. the body of'a 'bral'ze snoecomprising a plurality of strips'of reticulated nietal'arranged side by'side' on edge with openings in registration, and wedge-shape inserts insertible endwise in a tilted position in registered openings of thestrips' and adapted to be turned into'interlocking engagement with thewalls thereof.

6. An assembly of parts for embedment in the body of a brake shoe comprising a body of strips of expanded metal arranged side by side on edge with openings in registration, and wedge-shape inserts insertible endwise in registered openings of the strips and adapted to be turned into interlocking engagement with the walls of the openings.

'7. An assembly of parts for embedment in the body of a brake shoe comprising a plurality of strips of reticulated metal arranged side by side on edge with openings in registration, wedge-shape inserts insertible endwise in registered openings of the strips and having recesses at its corners and adapted to be turned to engage said recesses with the walls of the openings.

8. An assembly of parts for embedment in the body of a brake shoe comprising a plurality of strips of expanded metal arranged side by side on edge with openings in registration, wedge-shape inserts insertible endwise in registered openings of the strips and having a plurality of oppositely disposed recesses at its upper corners and a plurality of recesses at its lower corners off-set with respect to the recesses at the upper corners, said inserts being adapted to be turned in said openings to interlockingly engage the recesses with the walls of the openings.

9. An assembly of parts for embodiment in the body of a brake shoe comprising a plurality of strips of recticulated metal arranged side by side on edge with openings in registration, wedge-shape inserts insertible endwise in registered openings of the strips and adapted to be turned into upright position after insertion in the strips, said inserts having recesses at its corners to engage the walls of the openings and said recesses being disposed to maintain the strips in an inclined position with relation to the inserts and in spaced relation toeach other.

10. An insert for brake shoes wedge-shape in cross-section and having spaced recesses at its corners.

, 11. An insert for brake shoes wedge-shape in cross-section and having oppositely disposed spaced recesses at its upper corners and oppositely disposed spaced recesses at its lower corners off-set with respect to the recesses at the upper corners.

12. A brake shoe comprising a body, a plurality of reinforcing strips of reticulated metal embedded in the body in an inclined position on edge to the wearing face of the shoe, said strips having openings in registration, and inserts insertible endwise in registered openings of the strips and having recesses at the corners thereof to engage the walls of the openings, said inserts being interlockingly engaged with the strips whereby the strips and inserts are held in predetermined relation and both strips and inserts being embedded in the body of the shoe.

. JAMES S. THOMPSON. Witness:

M. A. Kmnm. 

